Fig. 3: ESR signals of thin films of PTzBT:ITIC:PC61BM and PTzBT:PC61BM, and the anisotropy measurements. | npj Flexible Electronics

Fig. 3: ESR signals of thin films of PTzBT:ITIC:PC61BM and PTzBT:PC61BM, and the anisotropy measurements.

From: Stability improvement mechanism due to less charge accumulation in ternary polymer solar cells

Fig. 3

a ESR spectra of thin films of PTzBT:ITIC:PC61BM (red line) and PTzBT:PC61BM (blue line) (defined as Signal 1) after 20 h solar irradiation. b Anisotropies of the ESR signals of the PTzBT:ITIC:PC61BM and PTzBT:PC61BM thin films measured by changing the angle θ between the substrate plane and H direction. The error bars are ±0.00005.

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